Invisible-impression printing.



E. W. HALL. INVISlBLE IMPBESSIDN PFHINITIMG.I

(Application led Feb, 19, 1902.) (No Mod-el.)

Patentd Apr. I, |9ID2.

W/NESSES:

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EDI/VARI) lV. HALL, OF RUTIIERFORI), NEW JERSEY, ASSIGNOR TO4 IIIMSELF,AND II. CLARENCE FISHER AND .I CHN L. OBERLY, OF NEW IYORK, N. Y.

lNVlSlBLEl/lPRESSiON PRHNTING.

SPECIFICATION forming part of Letters Batent No. 696,633, dated April 1,1902.4

Application filed February 19, 1902. Serial No. 94,790. (No modclJ To@ZZ wtont it may concern:

Beit known that I, EDWARD W. HALL, a citi Zen of the United States,residing at Rutherford, inthe county of Bergen and State of New 5Jersey, have invented certain new and useful Improvements inInvisible-Impression Printing, of which the following is aspecification.

This invention relates to invisible-impression printing; and it hasforits object to proi o vide certain improvements in the art whereby therelative association of visible and invisible pictorial or otherrepresentations and the development of the invisible part in itsrelation to the visible part will produce a com- :5 posite completeentity or whole in the nature of a surprise pictorial or otherrepresentation.

To these ends' my improvements comprise, substantially, the producing`upon an impreszo sion-receiving surface of a visible pictorial or otherrepresentation constituting in itself an entity or individual Whole andalso a substantially invisible pictorial or other representationconstituting in itself an entity or individual Whole, said visible andinvisible representations being arbitrarily distinctive with respect toeach other and respectively associated or correlated, so that they areadapted to conjointly produce a composite complete 3o pictorial orrepresentative entity or whole when the invisible vrepresentation isdeveloped or rendered visible, in which the visible association of thevisible and invisible parts completes the full motive or theme ofthepic- In the accompanying drawings I have illus- .trated one pictorialrepresentation embody.- `ing the subject-matter of my invention; but :itWill be understood that my improvements 4o are capable of a wide ordivers variety of pictorial or other representations.

Figure l of the drawings is a view representing the visible part of theimpression. Fig. 2 is a vieW representing the invisible part of theimpression. Fig. 3 is a vieivrepresenting the visible and invisibleparts of .the impression in their mutual correlation or association, theinvisible part havin gbecn developed or rendered visible.

Corresponding parts in all the figures are denoted by the saine numeralsof reference.

Referring to the drawings, l designates the visible part of theimpression or pictorial or other representation, which in the presentinstance of illustration represents an outline view of an ostrich, thisvisible part being printed or otherwise produced in any suitable oradapted manner and with any suitable ink or colors u pon anixnpression-receivingsheet or surface 2.

3 designates the invisible part of the impression or pictorial or otherrepresentation, which in the present instance illustrates frogs. Thisinvisible part is printed or other wise produced upon theimpression-receiving sheet or surface in any suitable or adapted mannerand with any suitable ink or colors, which will produce the outline orsubstantive illustration or pictorial or other representation upon thesurface 2, but at the same time leave said representation substantiallyinvisible. For instance, the part 3 may be printed in a suitable whiteink upon a White surface. Y

The visible and invisible pictorial or other representation l and 3,respectively, as above set forth, constitute each in itself an entity orindividual whole and are arbitrarily distiuctive with respect to eachother. They are, however, respectively associated or correlated, so thatthey are adapted to conjointly produce a complete pictorial orrepresentative entity or whole in which the visible association of thevisible and invisible parts completes the full motive or theme of thepictorial or other representation. For instance, in the presentillustrative instance the invisible part is printed or produced upon thesurface 3 in such position with relation to the visible part that itwill be Within the body outline of the latter. In other words,theinvisible representation of the frogs will bc Within the body outlineof the representation of the ostrich.

In carrying out my invention and improvements to produce the full motiveor4 theme of the pictorial or other representation the invisible part 3is adapted to be developed or rendered visible. This may be accomplishedin any suitable or adapted manner. For instance, when the invisible partis printed in a white or sympathetic ink on a surface corresponding incolor to the ink the same may be developed by rubbing over the portionof the surface bearing the invisible part with a lead-pencil, crayon,orothersubstaiice or material which will be taken up by the sympatheticink, and thusproduce avisible outline and substantive representation ofthe invisible part.

In carrying out the motive or theme of the composite pictorial or otherrepresentation made up of the visible and invisible parts l and 3 theremay be printed or provided upon the sheet or surface 2 suitablesuggestive mattcr-as, for instance, in relation to the presentillustration the words What tickles the palate of the ost-rich, andsuitable other mattergiving directions for developing theinvisibl'erepresentation may also be provided.

From the foregoing description it will be understood that in carryingout my invention and improvements the producing of the compositepictorial or other representation constituting a complete entity orWhole and made up of visible and 'substantially invisiblerepresentations arbitrarily distinctive with respect to each other andconstituting each in itself an entity or individual Whole produces anentertaining or surprise effect in carrying out the full motive or themeof the representation bythe development or rendering visible of theinvisible part.

It is obvious that my improvements are adapted for a Wide variety ofuses and a wide range of subjects in pictorial or other representation,and I therefore do not limit myself to the exact features ofillustration or relative position of the visible and invisible parts, asherein shown and described, but reserve the right to all such variationor adaptability to uses as properly falls Within the spirit and scope ofmy improvements and the terms of the following claims.

Having thus described my invention, I claim vand desire to secure byLetters Patent* v l. As an improvement in the art of printing ordeveloping pictures or other representations, the herein-describedmethod consisting in producing upon an impression-receiving surface avisible pictorial or other representation constituting in itself anentity or individual Whole and also a substantially invisible pictorialor other representation constituting in itself an entity or individualwhole, said visible and invisible representacorrelated so that they areadapted to con-v jointly produce a complete pictorial or representativeentity or Whole in which the visible association of the visible andinvisible parts completes the full motive or theme of the plctorial orother representation, and then developing the invisible representationto render the same visible in association with the visiblerepresentation to produce said composite complete entity or whole.

2. 'An impression-receiving sheet having upon its surface a visiblepictorial or other representation constituting in itself an entity orindividual Whole and also having a substantially invisible pictorial orother representation constituting in itself an entity or individualWhole, said visible and invisible representations being arbitrarilydistinctive with respect to each otherand respectively associated orcorrelated so that they are adapted to conjointly produce a completepictorial or representative entity or Whole in which the visibleassociation of the visible and invisible parts complete the full motiveor theme of the pictorial or other representation, said invisibleimpression being capable of development to produce visibility.

3. An impression-receiving sheet having visibly printed or produced uponitssurface a pictorial or other representation constituting in itself anentity or individual whole and also having a pictorial or otherrepresentation constituting in itself an entity or indil vidual Wholeand printed or produced upon its surface in a substantially invisible orsympathetic ink capable of development to visibility by treatment of thesurface having said invisible representation with a pencil, crayon, orother material or substance which will be taken up by said ink, saidvisible and invisible representations being arbitrarily distinctive withrespect to each other and respectively associated or correlated so thatthey are adapted to conjointly produce a complete pictorial orrepresentative entity or Whole in Which the visible association of thevisible and invisible parts completes the full motive or theme of thepictorial or other representation.

In testimony whereof I have signed my name in the presence of thesubscribing Witnesses.

EDWARD W. HALL.

Witnesses:

MARGARET M. DURKIN, JOHN M. I'Ioo'ron.

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